Reinforcing mechanism foe



G. s. WEINERTHi REINFORCING MECHANISM FOR CIRCULAR KNITTING MACHINES. APPLICAIION 'FILED JULY16, I919.

1,351,883. P ten e ep 7, 1920..-

' INVENTOR,

AH: nrnm s UNITED GEORGE s. wm ma; n nIn rmNNsYLvANIAf I 1 nnrivroncrne MncHAnIsMfron ,oInc LAn-Kmrrme MACHINES."

S nec ifi cati o'nofLettersPatent. at t 1, 1920,

Aptntauon fina nay 16, 1919. Serial No. 311,155.

b aZZw/mm it may coi'zccm:

Be it known thatl, GEORGE WEINERTH,

a citizen of the 'Unit'ed Statesfresiding at izteading, in the county 'ofBerks and State of Pennsylvania, have invented certaln new and useful Improvements. in Reinforcing ll lechanisni for Circular-KnittingMachines,

- ofwhich the following is a specification.

My invention relates particularly: tofcircu-z iar knitting machine in which approximately half of the needles arej operatedaat intervals for narrowi ng and widening andalso to knit a reinforcing threadinto the fabric, as commonly required i for hosiery. The 111+ veiition providesfor accurately div-idl ng the needles and for utilizing determined additional ones to knit-in the reinforcing thread during cii' cul'ar lniittihg", as fully described in connection with the accompanying drawing, and the-novel features areclearly definedin the claims. g I I Figure 1 18 a plan view showlngpartofa cam ring mechanism embodying, myunv'ention.'

Fig. 2 is across-sectional View on the "line i 220f Fig.

Fig. 3 is a view showingthree needles with differently formed" butts as employed in myinvention. f

Flg. 4 1s a diagrammatlc .view indicating the knitting cams in normal position} with the relative positioning i-of the several groups of needles ln'passing.

Fig, 5 is a diagrammatlc viewsirnilar to Fig. 4, but with the stitch cams omitte'd to indicate their withdrawal from action and; the pivotedleveling cam shown leveling position.

' The drawlng indicates only so much of well known knitting machine construction as is required for fully setting forththe present invention. e The cam ring 5, asshown, is of the fixed type carrying knitting cams operative upon needles mounted in a rotative cylinder; these cams including stitch cams 6,; 6 which [are while the needle lowering top center cam 8 and the levehng'lower centerjcam 9 are secured in saidpath bymeansofa plate 10' fixed to the cam ringg Ordinary means for f carrying a reinforcing thread tobe femployed as desired in connection with the main knitting thread,'are indicated by the pivoted thread-carrier fing'er l lq, I

reach the yarn-taking point. butt ends of the needles 17 may slightly engage the lowermost point of the earn, 8 withi Inyrny improved construction I employ certain of which differ-from the usual form indicated at 16, by having the endportions of their laterally extending butts reduced inheight, as indicated in needle This change in the form of the butts adapts tl1eseneedles l7 to serve as ordinary long butts in the usual raising of the needles into action, but permits them to be kept in action with the short butt needles when desired as hereinafter described; As indicatedin Fig. 4: a small group of thesespecial needles 1? is located adjacent the shortbutt series, at each end of the'latter, so to operate with the short-butt needles in knitting-in the reinforcing-thread particular purpose being to determinedly sired.

To provide-for operating the needles so a I to effect this purpose, form the top center earn 8 with two butt engaging portions, 8 and 8 arranged at different levels; the

v lower-extending portion 8 thereof being set (ba k so as to be cleared entirely by the I passingshort-butt needles l5, and beingalso :cleared by the normally-wide butt portions,

of the reduced-butt needles 17 so as to cause the latter to'pass the taking point of the fed thereto from the carrier-finger 11 the widenthesso-called high-splice which isordinarily knittedabove the heel'of'a stock-V ing, and also the reinforced bottorn-of the if circularly knitted portion'of-the'foot ifdereinforcing thread with the short-'butt'needles l5, whilethe normal long-butt needles 16 are lowered by said portion 8 before they The reduced out lowering said needles sufliciently to prevent' them from taking the reinforcing I serve the full purpose of the normal long movable into and out of the path of the. needles in well known manner, as indicated,

butts'so far as the raising of the long butt 6, 6 are Withdrawable from thepath of the needles, while the center cams arenot; so that "the downwardlyextended butt-engaging portion 8* of the top cam 8 will depress the nor- 7 mal long-butt needles 16 below the level of the shortbutt needles 15, not "only during the knitting operation, as desired m'the improved operation above described, but also when the stitch cams are withdrawn. To provide for leveling all. the needles, as is required in knitting half hose, 1 therefore employ a movable lower center cam 9 which 1s adapted to permit the required lowering of the longbutt needles 1.6 when it is in normal posi tion as indicated in Fig, l, but which is swung upward on its pivot 27 as indicated in Fig; 5, when it is desired. to level all. the

needles. This upward movement of the cam. 9 is effected-by means of a post or plate 28on the usual stitch cam bracket 29 which engages a conically headed pin 30 on the free end of the cam, as shown, and when thus positioned by the withdrawn stitch cani bracket it will hit all the l0ng butt needles to the level of the short-butt needles; the

7 same beyond the usual short-butt needles to desirably increase the width of the circularlyknitted reinforced fabric without attecting the usual division for properly knitting-the heel and toe portions.

lVhat I claim is v 1 1. In a circular knitting machine, the combination with reinforcing thread mechanism,

oi series of long butt and short butt needles certain of the iormer havlng reduced-end butts, and means tor oporatively positionin said. reduced-end long' butt needles either with the short butt needles or with the other long-butt needles to vary the extent of the reinforced knitting.

' 2. In a circular knitting machine, the combination with reinforcing thread mechanism, of series of long butt and short butt needles certain of the former having reduced-end butts, a needle-lowering center cam having engaging portionsat different levels tor the long butts and short butts respectively, withdrawable stitch cams, and a pivotally mov able leveling cam below said center cam.

3. In a circular knitting machine, the combination with'rcintoreing thread mechanism, of seriesot long butt and snort butt, needles certain of the former having reduced-end butts, a needlelowering center cam havingengaging portions at different levels for the longbutts and short butts respectively,'and

GEORGE S. XVEINERTH. 

